Editing Tandy Pocket Computer (section)

==Undocumented commands==
The PC-3 and PC-8 had a couple of commands that were not listed in the manual, but nonetheless were recognized by BASIC and usable.

* {{code|2=basic|CALL {memory location} }}; {{code|2=basic|PEEK {memory location} }} and {{code|2=basic|POKE {memory location},{byte value} }} - the highest memory location is 2047, and it is possible to modify the BASIC program in RAM directly with {{mono|POKE}}, as well as access a certain memory location (37, possibly?) that controls the DEG/RAD/GRAD spots on the LCD.  With judicious POKEs into the BASIC program text area more characters in the PC-8 character set can be discovered, including a `tilde` which also seems to function as a bizarre command.  Some blank characters when {{mono|PRINT#}}'ed will display additional symbols on the printer if one is attached.
* {{mono|CK00}} - seems to be some type of test mode for the display.  Will show a couple of patterns on the LCD and then appear to lock up.
* {{mono|CK01}} - seems to be some type of test mode related to the optional Printer Interface

Also, SHIFT-6 on the PC-8 will display a [[Yen]] symbol.